my spider wont molt. or eat

my striped knee tarantula wont eat or molt at all. i got her in december 26,2024 and she ate once infront of me and then never again and she hasnt molted at all. her abdomen is very small compared to how it was when i got her and since then it has lost most of the hair on it. im super worried and i dont know what to do about miu i do everything correctly. the only positive thing i could say is that she drinks a lot of water but thats about it and she seems happy with her enclosure